Inter-image component prediction method, and image encoding and decoding method and device using same
An image decoding and inter-prediction technology, which is applied in image communication, digital video signal modification, electrical components, etc., can solve the problems of increased transmission costs and storage costs, and increased data volume, so as to reduce visual artifacts, increase correlation, The effect of reducing the amount of bits
Pending Publication Date: 2021-07-23
INTELLECTUAL DISCOVERY CO LTD
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Since the amount of data relatively increases compared with existing image data as image data becomes high-resolution and high-quality, when transmitting image data by using media such as existing wired and wireless broadband circuits or by using existing When storage media is used to store image data, transmission costs and storage costs increase
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[0052] Since the disclosure is capable of various changes and has several embodiments, specific embodiments will be illustrated in the drawings and described in detail. However, it is not intended to limit the present disclosure to specific embodiments, and it should be understood that the present disclosure includes all changes, equivalents, or substitutes included in the idea and technical scope of the present disclosure. In describing each figure, like reference numerals are used for like parts.
[0053] Also, terms such as first, second, etc. may be used to describe various components, but the components should not be limited by the terms. Terms are only used to distinguish one component from other components. For example, a first component may be called a second component, and similarly, a second component may also be called a first component without exceeding the scope of rights of the present disclosure. The term "and / or" includes a combination of a plurality of relat...
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An image encoding and decoding method comprises the steps of: determining an inter-component prediction mode of a chrominance component block on the basis of an inter-component prediction mode list and predetermined index information; determining a reference sample for inter-component prediction of the chrominance component block on the basis of the determined inter-component prediction mode; deriving the parameters of a linear prediction model by using the reference sample; and performing inter-component prediction for the chrominance component block by using the parameters of the linear prediction model.
Description
technical field [0001] The present disclosure relates to image encoding / decoding methods and devices. Background technique [0002] Video images are compressed and encoded by removing spatio-temporal redundancy and inter-view redundancy, and the video images can be transmitted through communication lines or stored in a form suitable for storage media. [0003] Recently, demands for high-resolution and high-quality images such as HD (High Definition) images and UHD (Ultra High Definition) images have increased in various application fields. Since the amount of data relatively increases compared with existing image data as image data becomes high-resolution and high-quality, when transmitting image data by using media such as existing wired and wireless broadband circuits or by using existing When the image data is stored on a storage medium, transmission costs and storage costs increase. These problems generated as image data becomes high-resolution and high-quality can be ...
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IPC IPC(8): H04N19/105H04N19/186H04N19/132H04N19/176H04N19/50
CPCH04N19/105H04N19/11H04N19/132H04N19/176H04N19/182H04N19/186H04N19/59H04N19/593H04N19/50H04N19/109H04N19/167H04N19/46
Inventor 金在坤朴都铉尹庸旭都志勋
Owner INTELLECTUAL DISCOVERY CO LTD